Extracting prog: 1m36.553541708s
Minimizing prog: 2m0.302292219s
Simplifying prog options: 2m24.852287575s
Extracting C: 1m7.663177828s
Simplifying C: 9m13.726209858s


extracting reproducer from 30 programs
first checking the prog from the crash report
single: executing 1 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): futex
detailed listing:
executing program 0:
futex(0x0, 0x8b, 0x2, 0x0, &(0x7f0000000540)=0x2, 0x2)

program crashed: Internal error in futex_wait_setup
single: successfully extracted reproducer
found reproducer with 1 syscalls
minimizing guilty program
testing program (duration=45.551881951s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): futex
detailed listing:
executing program 0:
futex(0x0, 0x8b, 0x2, 0x0, 0x0, 0x2)

program did not crash
extracting C reproducer
testing compiled C program (duration=45.551881951s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): futex
program crashed: Internal error in sys_mount
a never seen crash title: Internal error in sys_mount, ignore
simplifying guilty program options
testing program (duration=45.551881951s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): futex
detailed listing:
executing program 0:
futex(0x0, 0x8b, 0x2, 0x0, &(0x7f0000000540)=0x2, 0x2)

program crashed: Internal error in futex_wait_setup
extracting C reproducer
testing compiled C program (duration=45.551881951s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): futex
program crashed: Internal error in futex_wait_setup
simplifying C reproducer
testing compiled C program (duration=45.551881951s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): futex
program crashed: Internal error in futex_wait_setup
testing compiled C program (duration=45.551881951s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): futex
program crashed: Internal error in futex_wait_setup
testing compiled C program (duration=45.551881951s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): futex
program crashed: Internal error in futex_wait_setup
testing compiled C program (duration=45.551881951s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): futex
program crashed: Internal error in futex_wait_setup
testing compiled C program (duration=45.551881951s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): futex
program crashed: Internal error in futex_wait_setup
testing compiled C program (duration=45.551881951s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): futex
program crashed: Internal error in futex_wait_setup
testing program (duration=45.551881951s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): futex
detailed listing:
executing program 0:
futex(0x0, 0x8b, 0x2, 0x0, &(0x7f0000000540)=0x2, 0x2)

program crashed: Internal error in sys_mount
validation run: crashed=true
testing program (duration=45.551881951s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): futex
detailed listing:
executing program 0:
futex(0x0, 0x8b, 0x2, 0x0, &(0x7f0000000540)=0x2, 0x2)

program crashed: Internal error in futex_wait_setup
validation run: crashed=true
testing program (duration=45.551881951s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): futex
detailed listing:
executing program 0:
futex(0x0, 0x8b, 0x2, 0x0, &(0x7f0000000540)=0x2, 0x2)

program crashed: Internal error in futex_wait_setup
validation run: crashed=true
reproducing took 21m39.512196613s
repro crashed as (corrupted=false):
Internal error: Oops - BTI: 0000000036000001 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 4218 Comm: syz.0.17 Not tainted 5.15.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
pstate: 42400405 (nZcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=jc)
pc : get_futex_value_locked kernel/futex/core.c:793 [inline]
pc : futex_wait_setup+0x1c4/0x4d4 kernel/futex/core.c:2916
lr : __uaccess_mask_ptr arch/arm64/include/asm/uaccess.h:239 [inline]
lr : get_futex_value_locked kernel/futex/core.c:790 [inline]
lr : futex_wait_setup+0x1a4/0x4d4 kernel/futex/core.c:2916
sp : ffff80001fcb7810
x29: ffff80001fcb7840 x28: ffff0000da321b64 x27: 0000000000000000
x26: 1fffe0001b46436c x25: ffff0000da321b40 x24: 00000000fffffff2
x23: 0000000000000000 x22: 1ffff00003f96f2d x21: dfff800000000000
x20: 0000000000000000 x19: ffff80001fcb7968 x18: 0000000000000000
x17: 0000000000000000 x16: ffff8000083c6ed8 x15: 000000000000000d
x14: 0000000000ff0100 x13: 1ffff0000282e06b x12: 0000000000ff0100
x11: 0000000000000001 x10: 0000ffffffffffff x9 : 0000000000000000
x8 : 0000000000000000 x7 : ffff8000083c8524 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082d608c
x2 : 0000000000000001 x1 : 0000000000000001 x0 : 0000000000000000
Call trace:
 get_futex_value_locked kernel/futex/core.c:790 [inline]
 futex_wait_setup+0x1c4/0x4d4 kernel/futex/core.c:2916
 futex_wait_requeue_pi kernel/futex/core.c:3458 [inline]
 do_futex+0x1bc8/0x257c kernel/futex/core.c:4005
 __do_sys_futex kernel/futex/core.c:4059 [inline]
 __se_sys_futex kernel/futex/core.c:4040 [inline]
 __arm64_sys_futex+0x388/0x400 kernel/futex/core.c:4040
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
Code: d503229f 2a1b03f8 2a1b03e0 b8400914 (2a1803e1) 
---[ end trace e42cd3bf22213361 ]---
----------------
Code disassembly (best guess):
   0:	d503229f 	csdb
   4:	2a1b03f8 	mov	w24, w27
   8:	2a1b03e0 	mov	w0, w27
   c:	b8400914 	ldtr	w20, [x8]
* 10:	2a1803e1 	mov	w1, w24 <-- trapping instruction

final repro crashed as (corrupted=false):
Internal error: Oops - BTI: 0000000036000001 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 4218 Comm: syz.0.17 Not tainted 5.15.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
pstate: 42400405 (nZcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=jc)
pc : get_futex_value_locked kernel/futex/core.c:793 [inline]
pc : futex_wait_setup+0x1c4/0x4d4 kernel/futex/core.c:2916
lr : __uaccess_mask_ptr arch/arm64/include/asm/uaccess.h:239 [inline]
lr : get_futex_value_locked kernel/futex/core.c:790 [inline]
lr : futex_wait_setup+0x1a4/0x4d4 kernel/futex/core.c:2916
sp : ffff80001fcb7810
x29: ffff80001fcb7840 x28: ffff0000da321b64 x27: 0000000000000000
x26: 1fffe0001b46436c x25: ffff0000da321b40 x24: 00000000fffffff2
x23: 0000000000000000 x22: 1ffff00003f96f2d x21: dfff800000000000
x20: 0000000000000000 x19: ffff80001fcb7968 x18: 0000000000000000
x17: 0000000000000000 x16: ffff8000083c6ed8 x15: 000000000000000d
x14: 0000000000ff0100 x13: 1ffff0000282e06b x12: 0000000000ff0100
x11: 0000000000000001 x10: 0000ffffffffffff x9 : 0000000000000000
x8 : 0000000000000000 x7 : ffff8000083c8524 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082d608c
x2 : 0000000000000001 x1 : 0000000000000001 x0 : 0000000000000000
Call trace:
 get_futex_value_locked kernel/futex/core.c:790 [inline]
 futex_wait_setup+0x1c4/0x4d4 kernel/futex/core.c:2916
 futex_wait_requeue_pi kernel/futex/core.c:3458 [inline]
 do_futex+0x1bc8/0x257c kernel/futex/core.c:4005
 __do_sys_futex kernel/futex/core.c:4059 [inline]
 __se_sys_futex kernel/futex/core.c:4040 [inline]
 __arm64_sys_futex+0x388/0x400 kernel/futex/core.c:4040
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
Code: d503229f 2a1b03f8 2a1b03e0 b8400914 (2a1803e1) 
---[ end trace e42cd3bf22213361 ]---
----------------
Code disassembly (best guess):
   0:	d503229f 	csdb
   4:	2a1b03f8 	mov	w24, w27
   8:	2a1b03e0 	mov	w0, w27
   c:	b8400914 	ldtr	w20, [x8]
* 10:	2a1803e1 	mov	w1, w24 <-- trapping instruction